Escape all non 'a' to 'z','A' to 'Z', '0' to '9' and '-' with a '_'. - Java java.lang

Java examples for java.lang:String Escape

  1. HOME
  2. Java
  3. java.lang
  4. String Escape

Description

Escape all non 'a' to 'z','A' to 'Z', '0' to '9' and '-' with a '_'.

Demo Code

/*/* w ww  .  j  a  v a2s .  c om*/
 * Copyright (c) 2010-2013 the original author or authors
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 */
//package com.java2s;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;

public class Main {
    /**
     * Escape all non 'a' to 'z','A' to 'Z', '0' to '9' and '-' with a '_'.
     *
     * '.' is escaped with a '_' if {@code escapeDot} is {@code true}.
     *
     * @param str       the string to escape
     * @param escapeDot indicates whether '.' should be escaped into '_' or not.
     * @param result    the {@linkplain StringBuilder} in which the escaped string is appended
     */
    public static void appendEscapedNonAlphaNumericChars(
            @Nullable String str, boolean escapeDot,
            @Nonnull StringBuilder result) {
        if (str == null) {
            return;
        }
        char[] chars = str.toCharArray();
        for (int i = 0; i < chars.length; i++) {
            char ch = chars[i];
            if (Character.isLetter(ch) || Character.isDigit(ch)
                    || ch == '-') {
                result.append(ch);
            } else if (ch == '.') {
                result.append(escapeDot ? '_' : ch);
            } else if (ch == '"' && ((i == 0) || (i == chars.length - 1))) {
                // ignore starting and ending '"' that are used to quote() objectname's values (see ObjectName.value())
            } else {
                result.append('_');
            }
        }
    }

    /**
     * Escape all non 'a' to 'z','A' to 'Z', '0' to '9' and '-' with a '_'.
     *
     * @param str    the string to escape
     * @param result the {@linkplain StringBuilder} in which the escaped string is appended
     */
    public static void appendEscapedNonAlphaNumericChars(
            @Nonnull String str, @Nonnull StringBuilder result) {
        appendEscapedNonAlphaNumericChars(str, true, result);
    }
}

Related Tutorials